374640 has 80 divisors (see below), whose sum is σ = 1333248. Its totient is φ = 85248.

The previous prime is 374639. The next prime is 374641. The reversal of 374640 is 46473.

374640 = T₅ + T₆ + ... + T₁₃₀.

It is an interprime number because it is at equal distance from previous prime (374639) and next prime (374641).

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 374640.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 374640.

It is not an unprimeable number, because it can be changed into a prime (374641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1569 + ... + 1791.

2³⁷⁴⁶⁴⁰ is an apocalyptic number.

374640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 374640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666624).

374640 is an abundant number, since it is smaller than the sum of its proper divisors (958608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

374640 is a wasteful number, since it uses less digits than its factorization.

374640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 374640 is about 612.0784263475. The cubic root of 374640 is about 72.0893951340.

The spelling of 374640 in words is "three hundred seventy-four thousand, six hundred forty".